Search found 82 matches

by Cai Arcos
Sat Apr 03, 2021 9:09 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Earthtech - Scott Little Mar 1999 second amateur fusor
Replies: 2
Views: 326

Re: Earthtech - Scott Little Mar 1999 second amateur fusor

I couldn't avoid chuckling at the "Power Balance" part
by Cai Arcos
Sat Mar 13, 2021 1:55 pm
Forum: Control and Instrumentation Hardware and Software
Topic: Software to collect and display measured data.
Replies: 16
Views: 1213

Re: Software to collect and display measured data.

If this were to be done, I believe all Richard circuits (HV supplies, CSAs, etc...) could be included as FAQs. It's a shame that such an useful material is buried in the files section
by Cai Arcos
Sun Feb 28, 2021 9:58 pm
Forum: Vacuum Technology (& FAQs)
Topic: Help me in my baby steps in the vacuum world.
Replies: 17
Views: 1841

Re: Help me in my baby steps in the vacuum world.

Oops! I forgot to update this post! I changed the oil and let it run for a 50 minutes or so. Pressure never dropped any more than the previously reported. The oil came filthy once again. I redid the process once again with the exact results. I have not had time to try once again with more oil, becau...
by Cai Arcos
Wed Feb 10, 2021 8:50 am
Forum: Vacuum Technology (& FAQs)
Topic: Help me in my baby steps in the vacuum world.
Replies: 17
Views: 1841

Re: Help me in my baby steps in the vacuum world.

Richard, John: The oil was a little bit over the half mark in the viewer. I still turned it on because it rotated freely when turned by hand. Regarding the manual, or who made it: I have no idea!! The only specification is a little placard that I attach below. I've spend quite some time searching fo...
by Cai Arcos
Tue Feb 09, 2021 3:14 pm
Forum: Vacuum Technology (& FAQs)
Topic: Help me in my baby steps in the vacuum world.
Replies: 17
Views: 1841

Re: Help me in my baby steps in the vacuum world.

Today I was able to extract the oil from the pump. I attach a photo.
As you can see, the oil is very dirty and is probably the reason the vacuum was so poor. Luckily, there are no metal chips or fragments.
As soon as I can I will purchase new oil and do new test runs.
by Cai Arcos
Sat Feb 06, 2021 6:38 pm
Forum: Vacuum Technology (& FAQs)
Topic: Help me in my baby steps in the vacuum world.
Replies: 17
Views: 1841

Re: Help me in my baby steps in the vacuum world.

Maciek: Thank you very much for your reply! Can really any tipe of industrial oil work? Is it "that easy" for a first try with a roughing pump? For example, would this oil from Amazon https://www.amazon.com/Octopus-Aceite-Bomba-compresor-m%C3%A1quinas/dp/B07QBPGZ54/ref=sr_1_5?dchild=1&keywords=aceit...
by Cai Arcos
Sat Feb 06, 2021 8:16 am
Forum: Vacuum Technology (& FAQs)
Topic: Help me in my baby steps in the vacuum world.
Replies: 17
Views: 1841

Re: Help me in my baby steps in the vacuum world.

Richard: I understood that some type of special oil would be needed, but what is most often recommended is to use the one recommended by the manufacturer, which I don't know. Is there any generic brand I could use? Regarding soap: this was an idea that had a friend of mine who works semi regularly i...
by Cai Arcos
Fri Feb 05, 2021 3:18 pm
Forum: Vacuum Technology (& FAQs)
Topic: Help me in my baby steps in the vacuum world.
Replies: 17
Views: 1841

Help me in my baby steps in the vacuum world.

Hello: I've recently started my journey into the vacuum world. Having absolutely no experience whatsoever, my first step was to fully digest the FAQs, read some literature and then to buy a tested MKS901p gauge. A friend of mine who makes neon lights for a living kindly gifted me an old vacuum pump ...
by Cai Arcos
Sun Jan 31, 2021 1:30 pm
Forum: Vacuum Technology (& FAQs)
Topic: DIY Penning gauge controller?
Replies: 6
Views: 837

Re: DIY Penning gauge controller?

In a spanish forum, they constructed a Penning Gauge from zero. They used a CCFL inverter and measured the current from the low side of the transformer to the ground of the primary, in order to avoid arcing and safety issues. As Richard stated, calibration is a problem which is pretty much impossibl...
by Cai Arcos
Sun Jan 31, 2021 1:25 pm
Forum: Vacuum Technology (& FAQs)
Topic: LCD Vacuum Sensor
Replies: 19
Views: 4616

Re: LCD Vacuum Sensor

Thanks for letting me know about the physics circuits on the 2nd edition, I have only read the 3rd and I am quite surprised by the amount of content that was removed...